Motion detection apparatus and motion detection method
First Claim
Patent Images
1. A motion detection apparatus for detecting a motion of an object, comprising:
- an image pickup section picking up a motion image and successively clipping a time series of frame images;
a feature extracting section extracting a first feature area, representing a feature of the object, from a first frame image among the time series of frame images;
a feature area standardizing section standardizing a size of the first feature area to be set as a first standardized feature area;
a mask generating section setting an area on the first frame image, which is a complement of the first standardized feature area in the first frame image, as a first masked area;
a balloting section resetting a count value associated with each pixel when the relevant pixel is located on the first masked area, and incrementing the count value when the relevant pixel is located on a first on-masked area that is the first standardized feature area; and
shift speed calculating section calculating a shift direction and shift speed of the first feature area based on a spatial gradient of the count values, accumulated for the time series of frame images, associated with the pixels located on the first standardized feature area, wherein the feature extracting section detects a corner edge component of the object as the first feature area.
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Abstract
A motion detection device includes a feature extracting section 2 extracting a feature area of an object from among frame images clipped by an image pickup section 1, a feature standardizing section 3 standardizing a size of a feature area extracted by the feature extracting section 2, a balloting section 4 counting up a ballot value of an image area on a frame image located in a standardized pattern that is standardized by the feature standardizing section 3, and a shift speed detecting section 5 calculating a gradient of a counted-up ballot value and calculating a shift direction, a shift speed and position of a feature area based on the gradient.
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Citations
22 Claims
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1. A motion detection apparatus for detecting a motion of an object, comprising:
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an image pickup section picking up a motion image and successively clipping a time series of frame images; a feature extracting section extracting a first feature area, representing a feature of the object, from a first frame image among the time series of frame images; a feature area standardizing section standardizing a size of the first feature area to be set as a first standardized feature area; a mask generating section setting an area on the first frame image, which is a complement of the first standardized feature area in the first frame image, as a first masked area; a balloting section resetting a count value associated with each pixel when the relevant pixel is located on the first masked area, and incrementing the count value when the relevant pixel is located on a first on-masked area that is the first standardized feature area; and shift speed calculating section calculating a shift direction and shift speed of the first feature area based on a spatial gradient of the count values, accumulated for the time series of frame images, associated with the pixels located on the first standardized feature area, wherein the feature extracting section detects a corner edge component of the object as the first feature area.
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2. A motion detection apparatus for detecting a motion of an object, comprising:
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an image pickup section picking up a motion image and successively clipping a time series of frame images; a feature extracting section extracting a first feature area, representing a feature of the object, from a first frame image among the time series of frame images; a feature area standardizing section standardizing a size of the first feature area to be set as a first standardized feature area; a mask generating section setting an area on the first frame image, which is a complement of the first standardized feature area in the first frame image, as a first masked area; a balloting section resetting a count value associated with each pixel when the relevant pixel is located on the first masked area, and incrementing the count value when the relevant pixel is located on a first non-masked area that is the first standardized feature area; a shift speed calculating section calculating a shift direction and shift speed of the first feature area based on a spatial gradient of the count values, accumulated for the time series of frame images, associated with the pixels located on the first standardized feature area; and a reset timing generating section that sets a reset timing at which the count values of the pixels located on the first non-masked area and a setting of the first masked area are reset, based on a positional relationship between the first standardized feature area and a second standardized feature area in which a size of a second feature area adjacent to the first feature area is standardized. - View Dependent Claims (3)
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4. A motion detection apparatus for detecting a motion of an object, comprising:
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an image pickup section picking up a motion image and successively clipping a time series of frame images; a feature extracting section extracting a first feature area, representing a feature of the object, from a first frame image among the time series of frame images; a feature area standardizing section standardizing a size of the first feature area to be set as a first standardized feature area; a mask generating section setting an area on the first frame image, which is a complement of the first standardized feature area in the first frame image, as a first masked area; a balloting section resetting a count value associated with each pixel when the relevant pixel is located on the first masked area, and incrementing the count value when the relevant pixel is located on a first non-masked area that is the first standardized feature area; and a shift speed calculating section calculating a shift direction and shift speed of the first feature area based on a spatial gradient of the count values, accumulated for the time series of frame images, associated with the pixels located on the first standardized feature area, wherein the mask generating section sets an area, generated by a logical product between the first masked area in the first frame image, and an area, which is the complement of the first standardized feature area in the second frame image adjacent to the first frame image in time series, as a masked area of the first standardized feature area in the second frame image. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A motion detection method for detecting a motion of an object, comprising:
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an image picking-up step for picking up a motion image and successively clipping a time series of frame images; a feature extracting step for extracting, by a feature extracting section, a first feature area representing a feature of the object, from a first frame image among the time series of frame images; a feature area standardizing step for standardizing a size of the first feature area to be set as a first standardized feature area; a mask generating step for setting an area on the first frame image, which is a complement of the first standardized feature area in the first frame image, as a first masked area; a balloting step for resetting a count value associated with each pixel when the relevant pixel is located on the first masked area, and incrementing the count value when the relevant pixel is located on a first non-masked area that is the first standardized feature area; and a shift speed calculating step for calculating a shift direction and shift speed of the first feature area based on a spatial gradient of the count values, accumulated for the time series of frame images, associated with the pixels located on the first standardized feature area, wherein the feature extracting step detects a corner edge component of the object as the first feature area.
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13. A motion detection method for detecting a motion of an object, comprising:
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an image picking-up step for picking up a motion image and successively clipping a time series of frame images; a feature extracting step for extracting, by a feature extracting section, a first feature area, representing a feature of the object, from a first frame image among the time series of frame images; a feature area standardizing step for standardizing a size of the first feature area to be set as a first standardized feature area; a mask generating step for setting an area on the first frame image, which is a complement of the first standardized feature area in the first frame image, as a first masked area; a balloting step for resetting a count value associated with each pixel when the relevant pixel is located on the first masked area, and incrementing the count value when the relevant pixel is located on a first non-masked area that is the first standardized feature area; a shift speed calculating step for calculating a shift direction and shift speed the first feature area based on a spatial gradient of the count values, accumulated for the time series of frame images, associated with the pixels located on the first standardized feature area; and a reset timing generating step for setting a reset timing at which the count values of the pixels located on the first non-masked area and a setting of the first masked area are reset, based on a positional relationship between the first standardized feature area and a second standardized feature area in which a size of a second feature area adjacent to the first feature area is standardized. - View Dependent Claims (14)
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15. A motion detection method for detecting a motion of an object, comprising:
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an image picking-up step for picking up a motion image and successively clipping a time series of frame images; a feature extracting step for extracting, by a feature extracting section, a first feature area, representing a feature of the object, from a first frame image among the time series of frame images; a feature area standardizing step for standardizing a size of the first feature area to be set as a first standardized feature area; a mask generating step for setting an area on the first frame image, which is a complement of the first standardized feature area in the first frame image, as a first masked area; a balloting step for resetting a count value associated with each pixel when the relevant pixel is located on the first masked area, and incrementing the count value when the relevant pixel it located on a first non-masked area that is the first standardized feature area; and a shift speed calculating step for calculating a shift direction and shift speed of the first feature area based on a spatial gradient of the count values, accumulated for the time series of frame images, associated with the pixels located on the first standardized feature area, wherein the mask generating step sets an area, generated by a logical product between the first masked area in the first frame image, and an area, which is the complement of the first standardized feature area in the second frame image adjacent to the first frame image in time series, as a masked area of the first standardized feature area in the second frame image. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A motion detection apparatus for detecting a motion of an object, comprising:
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image pickup means for picking up a motion image and consecutively clipping a time series of frame images; feature extracting means for extracting a first feature area, representing a feature of the object, from a first frame image among the time series of frame images; feature area standardizing means for standardizing a size of the first feature area to be set as a first standardized feature area; mask generating means for setting an area on the first frame image, which is a complement of the first standardized feature area in the first frame image, as a first masked area; balloting means for resetting a count value associated with each pixel when the relevant pixel is located on the first masked area, and incrementing the count value when the relevant pixel is located on a first non-masked area that is the first standardized feature area; and shift speed calculating means for calculating a shift direction and shift speed of the first feature area based on a spatial gradient of the count values, accumulated for the time series of frame images, associated with the pixels located on the first standardized feature area, wherein the mask generating means sets an area, generated by a logical product between the first masked area in the first frame image, and an area, which is the complement of the first standardized feature area in the second frame image adjacent to the first frame image in time series, as a masked area of the first standardized feature area in the second frame image.
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Specification